Crop straw crushing and sieving device
The staggered blade arrangement and fan suction design achieve thorough crushing and screening of straw, solving the problems of uneven crushing and accumulation, improving crushing efficiency and product quality, and reducing equipment operating costs.
Patent Information
- Application Number
- CN202422852992.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing straw crushers have poor crushing effects during the crushing process, resulting in uneven straw particle size and easy accumulation inside the machine, which affects the operating efficiency and lifespan of the equipment.
The design employs staggered first and second blades, combined with fan suction, to achieve thorough crushing and screening of straw. The fan suction draws straw of the appropriate size into the screening cylinder, while incompletely crushed straw undergoes secondary cutting to prevent accumulation.
It improves crushing efficiency and finished product quality, reduces equipment blockage and maintenance costs, extends equipment life, and lowers production costs.
Smart Images
Figure CN223515368U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to crop straw crushing and screening technical field, concretely is a kind of crop straw crushing and screening device. BACKGROUND
[0002] Crop straw crushing and screening device is a kind of mechanical equipment specially used for processing crop straw, to crush and screen straw, so as to be further processed or utilized, and the device has important role in agricultural production and resource recovery, and straw crusher is used widely in agricultural production as a kind of organic fertilizer production equipment, and it is necessary to crush straw for processing and then reuse, and straw crusher can crush corn stalk, straw, peanut skin, bean stalk and other combustible crop waste stalks, avoid the waste combustion of these crop straws, well protect the environment and effectively develop renewable energy.
[0003] In the prior art, most straw crushers often face the problem of poor crushing effect when crushing straw, and the straw cannot be fully broken in the crushing process, resulting in uneven size of crushed straw particles, affecting subsequent use and processing, and a large amount of debris and fine particles generated in the crushing process often accumulate inside the machine, especially at the bottom of the crusher, and since there is no effective discharge or conveying device inside the equipment, the accumulated straw residues not only affect the normal operation of the equipment, but also increase the difficulty of cleaning the equipment, resulting in reduced working efficiency of the machine, and the long-term accumulation of debris may cause blockage or damage to the machine, increase maintenance cost and shorten the service life of the equipment. UTILITY MODEL CONTENT
[0004] Therefore, the utility model aims at providing a crop straw crushing and screening device to solve the technical problem that most straw crushers often face the problem of poor crushing effect when crushing straw, and the straw cannot be fully broken in the crushing process, resulting in uneven size of crushed straw particles, affecting subsequent use and processing.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a crop straw crushing and screening device, comprising a workbench, the top end of the workbench is fixedly connected with a motor, the output end of the motor is fixedly connected with a first bevel gear, the first bevel gear is respectively engaged with a second bevel gear and a third bevel gear, one side of the top end of the workbench is fixedly connected with a fixed plate, one side of the fixed plate is provided with a fixed sleeve, the fixed sleeve is sleeved with a rotating shaft, the rotating shaft is fixedly connected with the second bevel gear, and the top end of the workbench is provided with a crushing box.
[0006] By adopting the technical scheme, the first blade on the crushing and screening cylinder and the second blade on the rotating shaft are reversely rotated through the staggered arrangement between the first blade and the second blade, the straw is more thoroughly crushed, the straw meeting the requirements after being crushed is sucked into the inside of the crushing and screening cylinder through the screening holes on the crushing and screening cylinder by the suction force of the fan, and crushing and screening are simultaneously realized, so that the crushing efficiency is improved, and only one power device is used to realize the crushing, so that the cost is low, the wind screening is arranged, the sandstone and other impurities whose weight exceeds the suction force of the wind cannot enter the crushing and screening cylinder, the sandstone and other impurities mixed in the output straw are further avoided, the quality of the output straw is improved, the straw that is not completely crushed is sucked to the vicinity of the crushing and screening cylinder through the arrangement of the fan, the straw is repeatedly cut and crushed by the blades on the crushing and screening cylinder, and the crushing effect is improved, and the problem that the straw is accumulated at the bottom of the straw crusher is avoided.
[0007] Further, the third bevel gear is fixedly connected with a fixed ring, the fixed ring is fixedly connected with a roller, the surface of the roller is fixedly connected with a plurality of groups of first blades, every two groups of first blades are fixedly connected with a connecting rod, a plurality of groups of screening holes are arranged on the surface of the roller, and a plurality of groups of through grooves are staggered on the surface of the roller.
[0008] By adopting the technical scheme, the effect of screening the straw is achieved through the screening holes.
[0009] Further, the rotating shaft extends to the end of the roller through the third bevel gear, a plurality of groups of second blades are equidistantly arranged on the surface of the rotating shaft, a plurality of groups of the second blades are fixedly connected with a rotating ring matched with the through grooves, and the rotating ring and the roller combine to form a crushing and screening cylinder.
[0010] By adopting the technical scheme, the effect that the rotating shaft synchronously drives the fan to rotate is achieved.
[0011] Further, the fan is sleeved on the surface of the rotating shaft at the end of the roller, and a filter hole is fixedly connected to one side of the fan in the roller.
[0012] By adopting the technical scheme, the damage of the straw to the fan is prevented through the arrangement of the filter hole.
[0013] Further, the fixed ring is sleeved on the surface of the rotating shaft, the length of the first blade is greater than that of the second blade, and the first blade and the second blade are staggered.
[0014] By adopting the technical scheme, the first blade and the second blade are staggered, so that the first blade on the crushing and screening cylinder and the second blade on the rotating shaft generate reverse cutting motion in the rotating process, form strong shearing action, and effectively and more thoroughly crush the straw.
[0015] Further, the top end of the pulverizing box is movably connected with a box cover, and a discharge port is formed in one side of the workbench.
[0016] By adopting the above technical scheme, the harm caused by the flying of the straw during the pulverization is prevented by the box cover.
[0017] To sum up, the utility model mainly has the following beneficial effects: the first blade and the second blade are staggered, the first blade on the pulverizing and screening cylinder and the second blade on the rotating shaft rotate in opposite directions, the straw is more completely pulverized, the straw meeting the demand after pulverization is sucked into the inside of the pulverizing and screening cylinder through the screening hole on the pulverizing and screening cylinder by the suction of the fan, the pulverization and screening are realized at the same time, the pulverization efficiency is improved, only one power device is used, the cost is low, the wind screening is arranged, the sandstone and other impurities whose weight exceeds the suction force cannot enter the pulverizing and screening cylinder, the sandstone and other impurities mixed in the output straw are further avoided, the quality of the output straw is improved, the straw not completely pulverized is sucked to the vicinity of the pulverizing and screening cylinder by the fan, the straw is repeatedly cut and pulverized by the blade on the pulverizing and screening cylinder, the pulverization effect is improved, and the problem that the straw is accumulated at the bottom of the straw pulverizer is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a whole structure schematic view of the utility model;
[0019] Figure 2 It is a partial structure schematic view of the utility model;
[0020] Figure 3 It is the utility model Figure 2 A enlarged view of the A place;
[0021] Figure 4 It is a first visual angle partial structure schematic view of the utility model;
[0022] Figure 5 It is a second visual angle partial structure schematic view of the utility model.
[0023] In the drawing: 1, workbench; 2, motor; 3, first bevel gear; 4, second bevel gear; 5, third bevel gear; 6, fixed plate; 7, fixed sleeve; 8, rotating shaft; 9, fixed ring; 10, roller; 11, first blade; 12, connecting rod; 13, screening hole; 14, through slot; 15, second blade; 16, rotating ring; 17, pulverizing and screening cylinder; 18, fan; 19, filter hole; 20, pulverizing box; 21, box cover; 22, discharge port. DETAILED DESCRIPTION
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0025] The embodiments of this utility model will be described below based on its overall structure.
[0026] A crop straw crushing and screening device, such as Figures 1-5 As shown, the device includes a workbench 1, a motor 2 fixedly connected to the top of the workbench 1, a first bevel gear 3 fixedly connected to the output end of the motor 2, the first bevel gear 3 meshing with a second bevel gear 4 and a third bevel gear 5, a fixed plate 6 fixedly connected to one side of the top of the workbench 1, a fixed sleeve 7 provided on one side of the fixed plate 6, a rotating shaft 8 sleeved on the fixed sleeve 7, the rotating shaft 8 fixedly connected to the second bevel gear 4, a crushing box 20 provided at the top of the workbench 1, a fixed ring 9 fixedly connected to the third bevel gear 5, a roller 10 fixedly connected to the fixed ring 9, multiple sets of first blades 11 fixedly connected to the surface of the roller 10, a connecting rod 12 fixedly connected between every two sets of first blades 11, multiple sets of screening holes 13 opened on the surface of the roller 10, multiple sets of through grooves 14 interlaced on the surface of the roller 10, and the rotating shaft 8 passing through the third bevel gear 5. Extending to the end of the drum 10, multiple sets of second blades 15 are equidistantly arranged on the surface of the rotating shaft 8. A rotating ring 16 that cooperates with the through groove 14 is fixedly connected between the multiple sets of second blades 15. The rotating ring 16 and the drum 10 are combined to form a crushing and screening cylinder 17. Specifically, when in use, the power is turned on, the straw is put into the crushing box 20, and the motor 2 is started. Through the staggered arrangement between the first blade 11 and the second blade 15, the first blade 11 on the crushing and screening cylinder 17 and the second blade 15 on the rotating shaft 8 generate a reverse cutting motion during rotation, forming a strong shearing action, which effectively crushes the straw more thoroughly. The staggered arrangement of the blades can form multi-angle and multi-directional cutting when the straw passes through, so that the straw is crushed into finer particles, ensuring the uniformity and effect of crushing.
[0027] Please see Figure 2, the surface of the end rotating shaft 8 of the roller 10 is sleeved with a fan 18, one side of the fan 18 in the roller 10 is fixedly connected with a filtering hole 19, the fixed ring 9 is sleeved on the surface of the rotating shaft 8, the length of the first blade 11 is greater than the length of the second blade 15, and the first blade 11 and the second blade 15 are arranged in an interlaced mode, specifically, in the crushing process, the fan 18 in the device is started at the same time, the straw that has been crushed and meets the demand in size is rapidly sucked into the inside of the crushing and screening cylinder 17 through the screening hole on the crushing and screening cylinder 17 by the suction force generated by the fan 18, the synchronization of crushing and screening is realized, since the size of the screening hole is accurately designed, only the straw particles with appropriate size can enter the inside through the screening hole, and the larger straw fragments that do not meet the requirements are attracted to the vicinity of the blades of the crushing and screening cylinder 17 by the fan 18 to be crushed and cut again, the automatic circulating crushing design not only improves the crushing efficiency, avoids the problem that the straw that is not completely crushed is repeatedly accumulated in the inside of the equipment, but also greatly reduces manual intervention and improves production efficiency.
[0028] Please refer to Figure 1 , the top end of the crushing box 20 is movably connected with a box cover 21, the workbench 1 is provided with a discharge port 22 on one side, and the setting of the box cover 21 prevents the harm caused by the splashing of the straw during crushing.
[0029] The working principle of the utility model is as follows: in use, the power supply is connected, the straw is put into the crushing box 20, the motor 2 is started, the first blade 11 and the second blade 15 are arranged in an interlaced mode, the first blade 11 on the crushing and screening cylinder 17 and the second blade 15 on the rotating shaft 8 generate reverse cutting motion in the rotating process, form strong shearing action, and effectively crush the straw more completely, the blades arranged in an interlaced mode can form multi-angle and multi-directional cutting when the straw passes through, the straw is crushed into smaller particles, and the uniformity and effect of crushing are ensured.
[0030] In the crushing process, the fan 18 in the device is started at the same time, the straw that has been crushed and meets the demand in size is rapidly sucked into the inside of the crushing and screening cylinder 17 through the screening hole on the crushing and screening cylinder 17 by the suction force generated by the fan 18, the synchronization of crushing and screening is realized, since the size of the screening hole is accurately designed, only the straw particles with appropriate size can enter the inside through the screening hole, and the larger straw fragments that do not meet the requirements are attracted to the vicinity of the blades of the crushing and screening cylinder 17 by the fan 18 to be crushed and cut again, the automatic circulating crushing design not only improves the crushing efficiency, avoids the problem that the straw that is not completely crushed is repeatedly accumulated in the inside of the equipment, but also greatly reduces manual intervention and improves production efficiency;
[0031] In addition, the device only needs to drive the blade rotation and fan 2 suction generation through one power device, simplifies the equipment structure, reduces the manufacturing and operation cost of the equipment, makes the operation of the whole system more economic and efficient, and the design of the wind power screening further optimizes the processing process of the straw.
[0032] The design not only improves the quality of the crushed straw product, but also prolongs the service life of the crushing equipment and reduces the wear caused by impurities entering the equipment.
[0033] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.
Claims
1. A crop straw crushing and screening device comprising a workbench (1), characterized in that: The top end of the workbench (1) is fixedly connected with a motor (2), the output end of the motor (2) is fixedly connected with a first bevel gear (3), the first bevel gear (3) is respectively engaged with a second bevel gear (4) and a third bevel gear (5), one side of the top end of the workbench (1) is fixedly connected with a fixed plate (6), one side of the fixed plate (6) is provided with a fixed sleeve (7), the fixed sleeve (7) is sleeved with a rotating shaft (8), the rotating shaft (8) is fixedly connected with the second bevel gear (4), and the top end of the workbench (1) is provided with a crushing box (20).
2. The crop residue pulverizing and screening device according to claim 1, characterized in that: The third bevel gear (5) is fixedly connected with a fixed ring (9), the fixed ring (9) is fixedly connected with a roller (10), the surface of the roller (10) is fixedly connected with a plurality of groups of first blades (11), every two groups of first blades (11) are fixedly connected with a connecting rod (12), a plurality of groups of screening holes (13) are formed in the surface of the roller (10), and a plurality of groups of through grooves (14) are formed in the surface of the roller (10) in a staggered manner.
3. The crop residue pulverizing and screening device according to claim 1, characterized in that: The rotating shaft (8) extends through the third bevel gear (5) to the end of the roller (10), a plurality of groups of second blades (15) are arranged on the surface of the rotating shaft (8) at equal intervals, a plurality of groups of the second blades (15) are fixedly connected with a rotating ring (16) matched with the through groove (14), and the rotating ring (16) and the roller (10) combine to form a crushing and screening cylinder (17).
4. The crop residue pulverizing and screening device according to claim 2, characterized in that: The end of the roller (10) is sleeved with a fan (18), and the fan (18) is fixedly connected with a filter hole (19) on one side in the roller (10).
5. The crop residue pulverizing and screening device according to claim 2, characterized in that: The fixed ring (9) is sleeved on the surface of the rotating shaft (8), the length of the first blade (11) is greater than that of the second blade (15), and the first blade (11) and the second blade (15) are arranged in a staggered manner.
6. The crop residue pulverizing and screening device according to claim 1, characterized in that: The top end of the crushing box (20) is movably connected with a box cover (21), and one side of the workbench (1) is provided with a discharge port (22).